<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title>后台登录</title>

<link href="assets/css/form-style.css" rel="stylesheet" />

</head>

<body>
<form action="" method="post">

    <div class="login">
      <div class="left">
        <h3>用户登陆</h3>
        <input type="hidden" name="" value="" />
        <div class="input"><input type="text" border-radius: 20px; name="username" placeholder="请输入用户名" maxlength="14"  datatype="/[A-Za-z0-9]{3,14}$/" errormsg="用户名至少3个字符,最多14个字符，并且只能为英文字母或者数字！" nullmsg="请输入用户名" sucmsg=" "/>
        </div>
        <div class="input"><input type="password" name="password" placeholder="请输入密码" maxlength="16" datatype="*6-16" errormsg="密码至少6个字符,最多16个字符！" nullmsg="请输入密码" sucmsg=" "/></div>
        <div class="btn">
         <div class="ld_btn_group"><input type="submit" class="ld_btn" value="登陆" /></div>
        </div>
      </div>
    </div>
	
	
        
</form> 

</body>
</html>

